Spinning-frame.



F. CASABLANCAS.

SPINNING FRAME.

Patented Mar. 18,1919.

. particularly consists FERNANDO CASABLANGAS, OI SABADELL, SPAIN.

' SPINNING-FRAME.

Specification of Letters ZPatent.

Application filed March 1, 1915. Serial No. 11,808.

To all whom it may concern:

Be it known that I, FERNANDO CASABLAN- GAS, a subject of the King of Spain, residing at Sabadell, Spain, have invented certain new and useful Improvements in Spinning- Frames; and do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled .in the art to which it appertains to make and use the same.

The present invention relates generally to improvements in spinning frames, and more in certain improvements 'over my prior Patent No. 1,147 ,67 6, granted July 20, 1915, and wherein is shown the usual drawing rollers junction with endless belts which receive the roving, grasping it practically throughout its length and delivering it to the drawing rollers in a well understood manner. similar apparatus is shown and described in my co-pending application Serial No. 859,467, filed August 31, 1914, and the present invention forms an improvement over the construction therein disclosed.

It is found that in the prior constructions the twist in the roving-prevents that uniformity in the drawing which is essential; and accordingly, by the construction of the present invention, a double drawing is accomplished, consisting of an initial or preparatory drawing wherein the twisting in the fibers is removed or reduced and such fibers thereupon delivered tothe drawing mechanism for accomplishing the final draw- With these and other objects in view the invention consists in the novel, details of construction and combinations of parts more fully hereinafter disclosed and particularly pointed out in the claims.

In the accompanying drawings forming a part of this application, and in which simi-' lar reference symbols indicate corresponding parts in the several views;

Figure 1 is a. vertical sectional view of an improved spinning frame as constructed in accordance with the present invention; and

Pi 2 is a similar view indicating a slightly modified form.

, In the form shown in Fig. 1, the drawing cylinders 3, which are usual drawing cylinders for ring spinning frames, draw the roving 11 which they receive from the belts 1, 2, which latter are driven by the roller 87, which, in turn, drives the roller 86. The

operating in conis regulated in two belts are guided by the rollers fitted at a short distance from the drawing rollers 3. The members for the initial drawing are constituted, advantageously, by the pair of belts 1, 2, and by rollers 88, 89, which may be the same as the feeding rollers usually found in the frames of this character. These rollers rotate with a speed which is less than the speed of the belts 1, 2, so that the belts, on catching the fibers, produce on them a certain initial or preparatory drawmg. The result is that the twist of the roving 11 is reduced, and that. the roving is prepared for receiving its final'd-rawing in the mechanism constituted by the belts 1 and 2 and the rollers 3. The feeding rollers 88, 89, moreover, have the efiect of delivering the roving to the retaining belts 1, 2, under a certain tension and in ,a direction A tangential to both belts, facilitating thereby the proper maintaining and confining of the fibers by the belts.

The drawing produced by the belts 1, 2, on the roving delivered by the rollers 88, 89,

each case in order to diminish, as required, or eliminate the twist of the roving 11 in accordance with the character of the drawing desired to be subsequently efi'ected by the mechanism composed by the belts and the rollers 3.

The invention may be applied to spinning frames as now ordinarily constructed with a slight modification of the parts, all as will be clear from an inspection of the drawings.

In accordance with the invention, the usual support 72 is employed to receive the bearing 7 3, and such bearing 7 3 in turn adjustably carries the bar 84, to which. are attached arms 75. In the arms 75 are journaled the guide rollers 5, such bar 74 and rollers 5 being adjustable through the slot and screw shown in the drawings. The drawing rollers 3, as likewise the feeding rollers 88 and 89 and the intermediate rollers 86 'and 87, over which the belts 1 and 2 are trained, may be the usual rollers now found on this type of spinning frames.

The roller 87 is journaled in a bearing 83 adjustably supported on the support 72 by a Patented Mar. 18, 1919.

screw 78. Similarly, there are supports 82 the roll 86; and to the latter bearing 81 is secured another bearing 79 for supporting the upper drawing roller 3. These various supports are all adjustable with respect to one another, so that the tension on the belts 1 and 2 of the various relative positions of the feeding, drawing, and intermediate rollers may be adjusted as required.

In Fig. 2 the members for the initial drawing are constituted by two belts or tapes 92 and 93, similar to the belts 1 and 2. These belts 92, 93, are conducted by rollers 90, 91, guided by rollers 95, of smaller diameter and fitted very near the belts 1 and 2. The object is the same as obtained in Fig. 1, namely, to produce a preparatory drawing, Which diminishes the twist of the roving, and con sequently facilitates its final drawing. In accordance with the double-belt arrangement shown in Fig. 2, I also obtain during the initi al drawing, the advantage that the belts 92, 93, retain the fibers out their length and avoid the likelihood of the fibers which are drawn by the belts 1, 2, from creeping or dragging along with them other fibers which have not yet been properly caught; which is an important step toward obtaining a thread of a more perfect uniformity.

In this form of the to the adjustable bar 7 5 and guide rollers 5, there is also supplied a second similar bar 84, adjustable on the support 72 and having thereon arms 85 for carrying the second air of guide rollers 95. The various other parts are the same as shown in Fig. 1, and are similarly numbered.

It is obvious that those skilled in the art invention, in addition speed smaller vthan of the roving through 74 for holding the arm may vary the details of construction and arrangements of parts without departing from the spirit of my invention, and therefor I do not wish to be limited to such features except as may be required by the claims.

What I claim is;

1. In a spinning frame provided with a drawing mechanism for the roving, consist ing of a pair of feeding endless belts and a pair of drawing rollers, the provision of a pair of supplementary feeding rollers, said feeding rollers being positioned before the feeding belts and rotating at a peripheral the speed of said belts in order that between said feeding belts and supplementary feeding rollers a certain drawing be produced suflicient to reduce or annul the twist of the roving.

2. In a spinning machine provided with a drawing mechanism for the roving, consisting of a pair of endless belts and a pair of drawing rollers, the combination of a pair of supplementary feeding rollers positioned before the endless belts, said feeding rollers rotating at a peripheral speed smaller than the one of said belts, to obtain a drawing of the roving between the feeding rollers and the endless belts, with the object that while the roving is grasped between the two endless belts, it remains substantiallyuntwisted to facilitate the drawing of the roving effected by the drawing cylinders.

- In testimony whereof I afiix my signature in presence of two witnesses.

FERNANDO CASABLANOAS. Witnesses: CONSTANTINO LOPEZ C1D, J osii PARERA VIDAL. 

